Expanding the Spectrum of NR4A3 Fusion-Positive Gynecologic Leiomyosarcomas.

Recurrent gene fusions have been observed in epithelioid and myxoid variants of uterine leiomyosarcoma. PGR::NR4A3 fusions were recently described in a subset of epithelioid leiomyosarcomas exhibiting rhabdoid morphology. In this study, we sought to expand the clinical, morphologic, immunohistochemical, and genetic features of gynecologic leiomyosarcomas harboring NR4A3 rearrangements with PGR and novel fusion partners. We identified 9 gynecologic leiomyosarcomas harboring PGR::NR4A3, CARMN::NR4A3, ACTB::NR4A3, and possible SLCO5A1::NR4A3 fusions by targeted RNA sequencing. Tumors frequently affected premenopausal women, involving the uterine corpus, uterine cervix, or pelvis. All were similarly characterized by lobules of monomorphic epithelioid and/or spindled cells arranged in sheets, cords, trabeculae, and micro- and macrocysts associated with abundant myxoid matrix and hemorrhage, creating labyrinth-like or pulmonary edema-like architecture. Myogenic differentiation with frequent estrogen receptor and progesterone receptor staining and no CD10 expression characterized all tumors. All cases showed high NR4A3 RNA expression levels and NOR1 (NR4A3) nuclear staining similar to salivary gland acinic cell carcinomas and a subset of extraskeletal myxoid chondrosarcomas harboring NR4A3 rearrangements. NOR1 (NR4A3) immunohistochemistry may serve as a useful diagnostic marker of NR4A3 fusion-positive gynecologic leiomyosarcomas.

Uterine Anastomosis with Low Anterior Resection.

In this surgical teaching video, we demonstrate the technique of robot-assisted uterine anastomosis combined with low anterior resection in a 27-year-old patient with T2 node-positive rectal cancer. The patient had undergone uterine transposition for fertility preservation prior to upfront chemotherapy and radiation therapy for rectal cancer. In this video, we review the key steps of both surgical procedures. We emphasize robot trocar placement and docking, demonstrate optimal organ manipulation and tissue handling, and include key operative modifications and pearls for successful perioperative management.

Surgical nodal assessment for endometrial hyperplasia - A meta-analysis and systematic review.

OBJECTIVE: Endometrial intraepithelial neoplasia (EIN) and atypical hyperplasia (AH) are recognized precursors for endometrial cancer (EC). Most current guidelines do not recommend the routine surgical evaluation of lymph nodes (LN), although recent studies indicate increased use of sentinel lymph node (SLN) biopsy in patients with a preoperative diagnosis of EIN/AH. We aimed to evaluate the rates of positive LN and its effect on the incidence of upstaging of EIN/AH patients, complications, and adjuvant treatment administration. METHODS: A systematic review and meta-analysis was conducted in the following databases: MEDLINE(R) using the OvidSP interface and PUBMED, Embase, Web of Science, Clinicaltrials.gov and Cochrane Library. Included were studies investigating lymph node evaluation in patients diagnosed with EIN/AH, presenting results of LN assessment and/or comparisons of hysterectomy results with and without lymph node assessment. This analysis was registered at PROSPERO International prospective register of systematic reviews (CRD42023443598). RESULTS: A total of 447 studies were initially identified through database searching. The current analysis includes 7 studies comprising 1791 atypical endometrial hyperplasia patients who underwent hysterectomy with lymph node assessment. The incidence of positive lymph nodes among those who had undergone any LN evaluation was found to be 1.1% (95% CI 0.3%-2%). The rate of positive LNs was 1.4% (95% CI 0.2%-1.9%) among those who had undergone specifically SLN. 319 (44.3%, 95% CI 34%-54.7%) patients of the patients initially diagnosed with EIN/AH (n = 699), were finally upgraded to EC diagnosis. Fifteen percent of the final EC diagnosed patients were treated with adjuvant treatment. No significant difference regarding complication rates was noticed. CONCLUSIONS: Our review indicates that the rate of metastatic LNs is <2% in patients undergoing surgical nodal evaluation for EIN/AH. However, the rate of complication for SLN mapping is low and may have an impact on postoperative therapy decisions in those diagnosed with malignancy.

Adenoid cystic carcinoma of the Bartholin's gland is underpinned by MYB- and MYBL1- rearrangements.

OBJECTIVE: Adenoid cystic carcinoma (AdCC) of the Bartholin's gland (AdCC-BG) is a very rare gynecologic vulvar malignancy. AdCC-BGs are slow-growing but locally aggressive and are associated with high recurrence rates. Here we sought to characterize the molecular underpinning of AdCC-BGs. METHODS: AdCC-BGs (n = 6) were subjected to a combination of RNA-sequencing, targeted DNA-sequencing, reverse-transcription PCR, fluorescence in situ hybridization (FISH) and MYB immunohistochemistry (IHC). Clinicopathologic variables, somatic mutations, copy number alterations and chimeric transcripts were assessed. RESULTS: All six AdCC-BGs were biphasic, composed of ductal and myoepithelial cells. Akin to salivary gland and breast AdCCs, three AdCC-BGs had the MYB::NFIB fusion gene with varying breakpoints, all of which were associated with MYB overexpression by IHC. Two AdCC-BGs were underpinned by MYBL1 fusion genes with different gene partners, including MYBL1::RAD51B and MYBL1::EWSR1 gene fusions, and showed MYB protein expression. Although the final AdCC-BG studied had MYB protein overexpression, no gene fusion was identified. AdCC-BGs harbored few additional somatic genetic alterations, and only few mutations in cancer-related genes were identified, including GNAQ, GNAS, KDM6A, AKT1 and BCL2, none of which were recurrent. Two AdCC-BGs, both with a MYB::NFIB fusion gene, developed metastatic disease. CONCLUSIONS: AdCC-BGs constitute a convergent phenotype, whereby activation of MYB or MYBL1 can be driven by the MYB::NFIB fusion gene or MYBL1 rearrangements. Our observations further support the notion that AdCCs, irrespective of organ site, constitute a genotypic-phenotypic correlation. Assessment of MYB or MYBL1 rearrangements may be used as an ancillary marker for the diagnosis of AdCC-BGs.

Extramammary Paget Disease. Part II. Evidence-based Approach to Management.

Extramammary Paget disease is a rare cutaneous malignancy that most commonly affects the genitals, perianal area, and axilla of elderly patients. Delays in care often lead to high levels of disease burden for patients. Thus, evidence-based recommendations are paramount in mitigating morbidity and mortality for this unique patient population. This 2-part continuing medical education series provides a complete picture of extramammary Paget disease. Part 2 of this continuing medical education series focuses on the complex management of extramammary Paget disease including surgical and non-invasive therapies, as well as novel approaches for advanced disease.

Extramammary Paget Disease. Part I. Epidemiology, Pathogenesis, Clinical Features, and Diagnosis.

Extramammary Paget disease (EMPD) is a rare skin cancer of apocrine-rich skin that mimics common inflammatory and infectious dermatoses, leading to delays in diagnosis and increased patient morbidity. Better clinical recognition of this entity, multidisciplinary patient assessment, and deeper understanding of the underlying pathophysiology are essential to improve patient care and disease outcomes. It is important to distinguish primary intraepithelial/micro-invasive EMPD from invasive EMPD or cases with adenocarcinoma arising within EMPD. This 2-part continuing medical education series provides a complete picture of EMPD. Part 1 of this continuing medical education series reviews the epidemiology, oncogenesis, clinical and histopathologic presentation, workup, and prognosis of this rare cancer.

Uterine transposition for fertility preservation in pelvic cancers.

OBJECTIVE: To review rates of uterine preservation and gonadal function, surgical outcomes, and pregnancy outcomes in patients undergoing surgical uterine transposition. METHODS: A structured search and analysis of the published literature on uterine transposition was conducted. Information on study type, sample size, patient characteristics, clinical indications, details of the surgical technique, trans-operative and post-operative results, success rates in preserving reproductive organ function and fertility were extracted. RESULTS: A total of 18 cases were reported to date. Patients' median age was 29 (range 3-38) years. Rectal cancers accounted for 9 (50%) cases of published cases of uterine transposition, followed by 6 (33%) cervical squamous cell carcinomas, 1 (6%) vaginal squamous cell carcinoma, 1 (6%) sacral yolk sac tumor, and 1 (6%) pelvic liposarcoma. The median time for uterine transposition to the upper abdomen was 150 (range 80-360) min, and 90 (range 80-310) min for organ reimplantation in the pelvis. Cervical ischemia occurred in 5 (27.8%) cases, being the most commonly reported complication. The median follow-up time was 25 months, and three patients achieved spontaneous pregnancies resulting in successful gestations, out of five patients who were reported as having tried. One patient experienced recurrence and succumbed to the tumor during treatment. CONCLUSIONS: Uterine transposition is a feasible and safe surgical approach that offers patients undergoing pelvic radiotherapy an option to preserve gonadal and uterine function, with the potential for spontaneous pregnancy.

Establishing guidelines for sentinel lymph node ultrastaging in endometrial cancer.

BACKGROUND: Many sentinel lymph node (SLN) ultrastaging protocols for endometrial cancer exist, but there is no consensus method. OBJECTIVE: This study aims to develop guidelines for size criteria in SLN evaluation for endometrial cancer, to determine whether a single cytokeratin AE1:AE3 immunohistochemical slide provides sufficient data for diagnosis, and to compare cost efficiency between current and limited ultrastaging protocols at a large tertiary care institution. METHODS: Our current SLN ultrastaging protocol consists of cutting two adjacent paraffin block sections at two levels (L1 and L2), 50 µm apart, with two slides at each level stained with hematoxylin and eosin and cytokeratin AE1:AE3 immunohistochemistry. We retrospectively reviewed digitized L1 and L2 slides of all positive ultrastaged SLNs from patients treated for endometrial cancer between January 2013 and January 2020. SLN diagnosis was defined by measuring the largest cluster of contiguous tumor cells in a single cross section: macrometastasis (>2.0 mm), micrometastasis (>0.2 to ≤2.0 mm or >200 cells), or isolated tumor cells (≤0.2 mm or ≤200 cells). Concordance between L1 and L2 results was evaluated. Cost efficiency between current (two immunohistochemical slides per block) and proposed limited (one immunohistochemical slide per block) protocols was compared. RESULTS: Digitized slides of 147 positive SLNs from 109 patients were reviewed; 4.1% of SLNs were reclassified based on refined size criteria. Complete concordance between L1 and L2 interpretations was seen in 91.8% of SLNs. A false-negative rate of 0%-0.9% in detecting micrometastasis and macrometastasis using a limited protocol was observed. Estimated charge-level savings of a limited protocol were 50% per patient. CONCLUSION: High diagnostic accuracy in SLN interpretation may be achieved using a limited ultrastaging protocol of one immunohistochemical slide per block and linear measurement of the largest cluster of contiguous tumor cells. Implementation of the proposed limited ultrastaging protocol may result in laboratory cost savings with minimal impact on health outcomes.

Prognosis of isolated tumor cells and use of molecular classification in early stage endometrioid endometrial cancer.

OBJECTIVE: We assessed the prognosis and molecular subtypes of early stage endometrioid endometrial cancer with isolated tumor cells within sentinel lymph nodes (SLNs) compared with node negative disease. METHODS: Patients diagnosed with stage IA, IB, or II endometrioid endometrial cancer and primary surgical management were identified from January 1, 2007 to December 31, 2019. All SLNs underwent ultrastaging according to the institutional protocol. Patients with cytokeratin positive cells, micrometastases, and macrometastases were excluded. Clinical, pathology, and molecular subtype data were reviewed. RESULTS: Overall, 1214 patients with early stage endometrioid endometrial cancer met the inclusion criteria, of whom 1089 (90%) had node negative disease and 125 (10%) had isolated tumor cells. Compared with node negative disease, the presence of isolated tumor cells had a greater association with deep myometrial invasion, lymphovascular space invasion, receipt of adjuvant therapy, and adjuvant chemotherapy with or without radiation (p<0.01). There was no significant difference in survival rates between patients with isolated tumor cells and node negative disease (3 year progression free survival rate 94% vs 91%, respectively, p=0.21; 3 year overall survival rate 98% vs 96%, respectively, p=0.45). Progression free survival did not significantly differ among patients with isolated tumor cells who received no adjuvant therapy or chemotherapy with or without radiation (p=0.31). There was no difference in the distribution of molecular subtypes between patients with isolated tumor cells (n=28) and node negative disease (n=194; p=0.26). Three year overall survival rates differed significantly when stratifying the entire cohort by molecular subtype (p=0.04). CONCLUSIONS: Patients with isolated tumor cells demonstrated less favorable uterine pathologic features and received more adjuvant treatment with similar survival compared with patients with nodenegative disease. Among the available data, molecular classification did not have a significant association with the presence of isolated tumor cells, although copy number-high status was a poor prognostic indicator in early stage endometrioid endometrial cancer.

Molecular and pathologic data to guide selection of patients with endometrioid endometrial cancer for ovarian preservation.

OBJECTIVES: To investigate the association of molecular and pathologic factors with concurrent or recurrent ovarian disease to guide ovarian preservation in endometrioid endometrial cancer. METHODS: Patients with endometrial cancer ≤50 years of age at diagnosis were grouped by elective oophorectomy versus ovarian preservation at staging (January 2010 to June 2021). Tumors were stratified by molecular sub-type and CTNNB1 mutational status with next generation sequencing and immunohistochemistry. Germline data identified patients with Lynch syndrome. Associations between molecular/pathologic features and concurrent ovarian disease in patients electing oophorectomy were compared with the Wilcoxon rank-sum and Fisher's exact tests. Associations with isolated ovarian recurrences in patients who chose ovarian preservation were examined using survival analyses. RESULTS: Among 317 patients with endometrial cancer who underwent bilateral oophorectomy, 27 (9%) had malignant ovarian tumors, of whom 11 (41%) had no gross ovarian involvement on intra-operative survey. For patients with sequencing, concurrent malignant ovarian tumors were diagnosed in 0/14 (0%) POLE, 2/48 (4%) copy number-low/no specific molecular profile, 10/22 (45%) microsatellite instability-high, and 3/6 (50%) copy number-high/TP53abnormal patients (p<0.001). Concurrent malignant ovarian tumors were present in 1/30 (3%) hotspot CTNNB1-mutated versus 10/60 (17%) wildtype/CTNNB1 non-hotspot mutated endometrial cancer patients (p=0.11) and 7/28 (25%) Lynch versus 7/74 (9%) non-Lynch syndrome patients (p=0.06). Concurrent malignant ovarian tumors were present in patients with higher grade endometrial cancer (5% grade 1 vs 20% grade 2 and 24% grade 3; p<0.001), present versus absent lymphovascular space invasion (20% vs 6%; p=0.004), positive versus negative pelvic washings (28% vs 7%; p=0.016), and ≥50% versus <50% myoinvasion (24% vs 7%; p=0.004). Of 103 patients who chose ovarian preservation, four had isolated ovarian recurrences (two had high-risk pathologic features and two had high-risk molecular features). CONCLUSIONS: The integration of molecular and pathologic data may improve risk stratification of pre-menopausal patients with endometrial cancer and enhance candidate selection for ovarian preservation.

ARIA II: a randomized controlled trial of near-infrared Angiography during RectosIgmoid resection and Anastomosis in women with ovarian cancer.

BACKGROUND: Ovarian cancer with extensive metastatic disease involving pelvic structures often requires rectosigmoid resection for complete gross resection; however, it is associated with increased surgical morbidity. There are limited data, and none in ovarian cancer, on near-infrared assessment of perfusion in rectosigmoid resections with anastomosis. PRIMARY OBJECTIVE: To compare the rate of pelvic complications (pelvic abscesses, anastomotic leaks, and infections) within 30 days of surgery with and without near-infrared assessment of perfusion at time of rectosigmoid resection and re-anastomosis in patients undergoing cytoreductive surgery for ovarian cancer. STUDY HYPOTHESIS: We hypothesize the use of near-infrared technology (intravenous indocyanine green and endoscopic near-infrared fluorescence imaging), compared with standard intra-operative assessment, to evaluate anastomotic perfusion at time of rectosigmoid resection and re-anastomosis will result in lower rates of post-operative pelvic complications. TRIAL DESIGN: This is a planned multicenter randomized controlled trial. Patients who undergo rectosigmoid resection as part of their ovarian cytoreductive surgery will be randomized 1:1 to standard assessment of anastomosis with the surgeon's usual technique (control arm) or assessment with near-infrared angiography using indocyanine green and endoscopic fluorescence imaging (experimental arm). Randomization will occur after rectosigmoid resection has been completed and the surgeon declares their plan to create a diverting ostomy. Randomization will be stratified by plan for diverting ostomy. MAJOR INCLUSION/EXCLUSION CRITERIA: Main inclusion criteria include patients with primary or recurrent ovarian, fallopian tube, or primary peritoneal cancer who are scheduled for cytoreductive surgery with suspected need for low-anterior rectosigmoid resection. PRIMARY ENDPOINT: Rate of 30-day post-operative pelvic complications. SAMPLE SIZE: 310 (155 per arm) ESTIMATED DATES FOR COMPLETING ACCRUAL AND PRESENTING RESULTS: Q2 2027 and Q4 2027, respectively. TRIAL REGISTRATION: NCT04878094.

Consensus on surgical technique for sentinel lymph node dissection in cervical cancer.

OBJECTIVE: The purpose of this study was to establish a consensus on the surgical technique for sentinel lymph node (SLN) dissection in cervical cancer. METHODS: A 26 question survey was emailed to international expert gynecological oncology surgeons. A two-step modified Delphi method was used to establish consensus. After a first round of online survey, the questions were amended and a second round, along with semistructured interviews was performed. Consensus was defined using a 70% cut-off for agreement. RESULTS: Twenty-five of 38 (65.8%) experts responded to the first and second rounds of the online survey. Agreement ≥70% was reached for 13 (50.0%) questions in the first round and for 15 (57.7%) in the final round. Consensus agreement identified 15 recommended, three optional, and five not recommended steps. Experts agreed on the following recommended procedures: use of indocyanine green as a tracer; superficial (with or without deep) injection at 3 and 9 o'clock; injection at the margins of uninvolved mucosa avoiding vaginal fornices; grasping the cervix with forceps only in part of the cervix is free of tumor; use of a minimally invasive approach for SLN biopsy in the case of simple trachelectomy/conization; identification of the ureter, obliterated umbilical artery, and external iliac vessels before SLN excision; commencing the dissection at the level of the uterine artery and continuing laterally; and completing dissection in one hemi-pelvis before proceeding to the contralateral side. Consensus was also reached in recommending against injection at 6 and 12 o'clock, and injection directly into the tumor in cases of the tumor completely replacing the cervix; against removal of nodes through port without protective maneuvers; absence of an ultrastaging protocol; and against modifying tracer concentration at the time of re-injection after mapping failure. CONCLUSION: Recommended, optional, and not recommended steps of SLN dissection in cervical cancer have been identified based on consensus among international experts. These represent a surgical guide that may be used by surgeons in clinical trials and for quality assurance in routine practice.

The RECOURSE Study: Long-term Oncologic Outcomes Associated With Robotically Assisted Minimally Invasive Procedures for Endometrial, Cervical, Colorectal, Lung, or Prostate Cancer: A Systematic Review and Meta-analysis.

OBJECTIVE: To assess long-term outcomes with robotic versus laparoscopic/thoracoscopic and open surgery for colorectal, urologic, endometrial, cervical, and thoracic cancers. BACKGROUND: Minimally invasive surgery provides perioperative benefits and similar oncological outcomes compared with open surgery. Recent robotic surgery data have questioned long-term benefits. METHODS: A systematic review and meta-analysis of cancer outcomes based on surgical approach was conducted based on Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines using Pubmed, Scopus, and Embase. Hazard ratios for recurrence, disease-free survival (DFS), and overall survival (OS) were extracted/estimated using a hierarchical decision tree and pooled in RevMan 5.4 using inverse-variance fixed-effect (heterogeneity nonsignificant) or random effect models. RESULTS: Of 31,204 references, 199 were included (7 randomized, 23 database, 15 prospective, 154 retrospective studies)-157,876 robotic, 68,007 laparoscopic/thoracoscopic, and 234,649 open cases. Cervical cancer: OS and DFS were similar between robotic and laparoscopic [1.01 (0.56, 1.80), P =0.98] or open [1.18 (0.99, 1.41), P =0.06] surgery; 2 papers reported less recurrence with open surgery [2.30 (1.32, 4.01), P =0.003]. Endometrial cancer: the only significant result favored robotic over open surgery [OS; 0.77 (0.71, 0.83), P <0.001]. Lobectomy: DFS favored robotic over thoracoscopic surgery [0.74 (0.59, 0.93), P =0.009]; OS favored robotic over open surgery [0.93 (0.87, 1.00), P =0.04]. Prostatectomy: recurrence was less with robotic versus laparoscopic surgery [0.77 (0.68, 0.87), P <0.0001]; OS favored robotic over open surgery [0.78 (0.72, 0.85), P <0.0001]. Low-anterior resection: OS significantly favored robotic over laparoscopic [0.76 (0.63, 0.91), P =0.004] and open surgery [0.83 (0.74, 0.93), P =0.001]. CONCLUSIONS: Long-term outcomes were similar for robotic versus laparoscopic/thoracoscopic and open surgery, with no safety signal or indication requiring further research (PROSPERO Reg#CRD42021240519).

Oncologic outcomes of robot-assisted laparoscopy versus conventional laparoscopy for the treatment of apparent early-stage endometrioid adenocarcinoma of the uterus.

OBJECTIVE: To compare long-term oncologic outcomes in patients with clinically uterine-confined endometrioid endometrial cancer who underwent surgical staging with robot-assisted (RA) versus conventional laparoscopy. METHODS: We performed a retrospective chart review of patients with newly diagnosed, uterine-confined endometrioid endometrial cancer who were treated and had primary surgery at our institution between 1/1/2009-1/1/2018. Clinicopathologic, surgical, and survival data were collected. Appropriate statistical methods were applied. RESULTS: Of 1728 patients identified, 1389 (80.4%) underwent RA and 339 (19.6%) conventional laparoscopy. At diagnosis, median age was 60 years (range, 24-92) and median BMI was 30.2 kg/m2 (range, 15.1-71.5). In the RA group, patients had longer operative time (170 vs 152 min, P < .001), lower conversion rate to laparotomy (0.6% vs 4.7%, P < .001), and a higher proportion had a BMI > 40 kg/m2 (17.2% vs 11.5%, P = .01) and same-day discharge (19.2% vs 5.3%, P < .001). Overall, 93% (RA) and 90% (conventional) of patients underwent lymph node assessment (P = .1). Comparing the RA versus conventional groups, final surgical stage on pathology (P = .6), median follow-up (55.7 vs 52.9 months, P = .4), and rates of perioperative complications (9.9% vs 7.7%, P = .6), recurrence (9.5% vs 7.4%, P = .3), 5-year PFS (88.5% vs 91.0%, P = .3), and 5-year OS (92.5% vs 92.4%, P = .7) were not significantly different. No significant increase in risk of recurrence (HR = 1.2, 95% CI: 0.8-1.9, P = .3) or poorer OS outcomes (HR = 0.9, 95% CI: 0.6-1.4, P = .7) were observed in the RA group. CONCLUSION: In uterine-confined endometrioid endometrial cancers, surgical staging using RA laparoscopy was not associated with adverse survival outcomes compared to conventional laparoscopy.

Sentinel lymph node mapping in patients with endometrial hyperplasia: A practice to preserve or abandon?

OBJECTIVES: To compare outcomes of patients with premalignant endometrial pathology undergoing hysterectomy with or without sentinel lymph node (SLN) removal. Outcomes of interest included surgical adverse events (AEs), cancer status on final pathology, postoperative treatment, and The Cancer Genome Atlas (TCGA) molecular risk profiles. METHODS: We retrospectively identified patients with premalignant pathology on preoperative endometrial biopsy who underwent hysterectomy with or without SLN mapping/excision at our institution from 01/01/2017-12/31/2021. Clinical, pathologic, surgical, and TCGA profiling data were abstracted. Appropriate statistical tests were used. RESULTS: Of 221 patients identified, 161 (73%) underwent hysterectomy with SLN excision and 60 (27%) underwent hysterectomy without SLN excision. Median age and body mass index were similar between groups. Median operative time was 130 min for those who underwent SLN mapping/excision versus 136 min for those who did not (p = 0.6). Thirty-day postoperative AE rates were 9% (n = 15/161) and 13% (n = 8/60), respectively (p = 0.9). Ninety-eight (44%) of 221 patients had grade 1-2 endometrioid endometrial cancer on final pathology (4 [4%] were stage IB or higher). Ten (10%) of 98 patients, all within the SLN group, received adjuvant treatment. Among all patients, of 33 (15%) with TCGA molecular classification data, 27 (82%) had copy number-low, 3 (9%) microsatellite instability-high, 2 (6%) POLE-ultramutated, and 1 (3%) copy number-high disease. CONCLUSIONS: SLN assessment appears safe, detects a small number of occult nodal metastases for those upstaged, and provides additional staging information that can guide adjuvant treatment. SLN mapping should be discussed in preoperative counseling and offered using a shared decision-making approach.

Laparoscopy with or without robotic assistance does not negatively impact long-term oncologic outcomes in patients with uterine serous carcinoma.

OBJECTIVES: We sought to compare outcomes between minimally invasive surgery (MIS) and laparotomy in patients with clinical stage I uterine serous carcinoma (USC). METHODS: Patients who underwent surgery for newly diagnosed USC between 11/1/1993 and 12/31/2017 were retrospectively identified and assigned to either the MIS cohort or the laparotomy cohort. Patients with conversion to laparotomy were analyzed with the MIS cohort. Chi-square and Mann-Whitney tests were used to compare categorical and continuous variables, respectively. Kaplan-Meier curves were used to estimate survival and compared using the log-rank test. RESULTS: In total, 391 patients met inclusion criteria; 242 underwent MIS (35% non-robotic and 65% robotic-assisted laparoscopies) and 149 underwent laparotomy. Age, BMI, stage, and washings status did not differ between cohorts. Patients who underwent MIS were less likely to have lymphovascular space invasion (LVSI; 35.1% vs 48.3%), had fewer nodes removed (median, 9 vs 15), and lower rates of paraaortic nodal dissection (44.6% vs 65.1%). Rates of adjuvant therapy did not differ between cohorts. Median follow-up times were 63.0 months (MIS cohort) vs 71.0 months (laparotomy cohort; P = .04). Five-year PFS rates were 58.7% (MIS) vs 59.8% (laparotomy; P = .1). Five-year OS rates were 65.2% (MIS) compared to 63.5% (laparotomy; P = .2). On multivariable analysis, higher stage, deep myometrial invasion, and positive washings were associated with decreased PFS. Age ≥ 65 years, higher stage, LVSI, and positive washings were associated with shorter OS. CONCLUSIONS: MIS does not compromise outcomes in patients with newly diagnosed USC and should be offered to these patients to minimize surgical morbidity.

Isolated vaginal recurrence in women with stage I endometrial cancer.

OBJECTIVE: To compare clinical and pathologic characteristics of women with surgical stage I endometrial carcinoma by location of first recurrence and describe characteristics of isolated vaginal recurrence. METHODS: Patients with 2009 International Federation of Obstetrics and Gynecology (FIGO) stage I endometrial carcinoma treated at two large cancer centers from 1/1/2009-12/31/2017 were identified. Sarcoma histology was excluded. Recurrences were grouped into isolated vaginal or extravaginal. Isolated vaginal recurrences were localized by anatomic location within the vaginal vault. Clinical and pathologic variables were compared with chi-square analysis, and Kaplan-Meier curves with log-rank tests. RESULTS: Of 2815 women identified, 278 (10%) experienced a recurrence. Sixty-one patients (2%) had an isolated vaginal recurrence, including 42 (69%) at the vaginal apex; 217 (8%) had an extravaginal recurrence, including 18 with a vaginal component. Median time to recurrence was 11 months (range, 1-68) for isolated vaginal recurrence and 20 months (range, 1-98) for extravaginal recurrence (P < .004). Of 960 patients (34%) treated with adjuvant vaginal brachytherapy (VBT), 156 (16%) recurred; 19 (2%) had an isolated vaginal recurrence, including 16 (84%) at the vaginal apex. Three-year PFS rates for isolated vaginal recurrence were 97.6% (SE ± 0.4%) with minimally invasive surgery (MIS) versus 96.9% (SE ± 1.1%) with open (P = .8), and for extravaginal recurrence were 91.8% (SE ± 0.7%) with MIS versus 90.8% (SE ± 1.8%) with open (P = .8). CONCLUSIONS: Isolated vaginal recurrences in stage I endometrial cancer are detected earlier than non-vaginal recurrences. Surgical approach does not appear to impact recurrence. Adjuvant VBT after primary surgery carries a 1%-2% risk of isolated vaginal apex recurrence.

Impact of postoperative morbidity on outcomes in patients with advanced epithelial ovarian cancer undergoing intestinal surgery at the time of primary or interval cytoreductive surgery: A Memorial Sloan Kettering Cancer Center Team Ovary study.

OBJECTIVE: To assess the impact of short-term postoperative complications on oncologic outcomes for patients with epithelial ovarian cancer undergoing primary cytoreductive surgery (PCS) or interval cytoreductive surgery (ICS) with intestinal resection. METHODS: A retrospective chart review was performed for patients with ovarian cancer who underwent PCS or ICS with at least one intestinal resection at our institution from 1/1/2015 to 12/31/2020. Progression-free survival (PFS) and overall survival (OS) were analyzed for the PCS and ICS cohorts separately. Short-term complications within 30 days of surgery (surgical secondary events [SSEs]) were graded by a validated institutional SSE system. RESULTS: Among 437 patients who underwent intestinal resections during PCS (n = 289) or ICS (n = 148), 183 (42%) had one, 180 (41%) had two, and 74 (17%) had three intestinal resections. Six (1.4%) of 437 patients experienced an anastomotic leak postoperatively. There were no perioperative deaths. There was no difference in PFS and OS for patients who underwent PCS with any SSE vs. no SSE within 30 days of surgery (HR, 1.05; 95% CI: 0.76-1.47; p = 0.75 and HR, 0.79; 95% CI: 0.49-1.26; p = 0.32, respectively). There was no difference in PFS and OS for patients who underwent ICS with any SSE vs. no SSE within 30 days of surgery (HR, 1.43; 95% CI: 0.99-2.07; p = 0.055 and HR. 1.18; 95% CI: 0.72-1.93; p = 0.52, respectively. CONCLUSION: Short-term postoperative morbidity for patients who underwent intestinal surgery during primary surgical management for advanced ovarian cancer did not impact oncologic outcomes.

Molecular subtyping in endometrial cancer: A promising strategy to guide fertility preservation.

OBJECTIVES: To investigate the association of molecular subtype with progesterone response in patients with endometrial cancer (EC) or atypical endometrial hyperplasia (AEH). METHODS: Premenopausal patients aged ≤48 years with tumor-normal sequencing data who received progesterone for EC/AEH from 1/1/2010-6/30/2021 were identified. Tumors were classified as POLE-ultramutated, microsatellite instability-high (MSI-H), copy number-high (CN-H), or copy number-low (CN-L) molecular subtype. Best response to progesterone was compared by subtype. Appropriate statistical tests were performed. RESULTS: Of 20 patients, 7 (35%) had AEH and 13 (65%) had EC. Sixteen tumors (80%) were CN-L, 3 (15%) were MSI-H, and 1 (5%) was POLE-ultramutated. Median time on progesterone was 22 months (range, 3-115). Ten patients (50%) had complete response (CR); median time to CR was 9 months (range, 3-32). Four patients (20%) had stable disease (SD) and 6 (30%) had progressive disease (PD). For CN-L tumors, 10 patients (62%) had CR, 3 (19%) had SD, and 3 (19%) had PD. For MSI-H tumors, 1 patient (33%) had SD and 2 (66%) had PD. For POLE-ultramutated tumors, 1 patient had PD. Median follow-up was 48 months (range, 12-123). Four of 10 patients (40%) with CR recurred; median time from CR to recurrence was 16 months (range, 5-102). CONCLUSION: Molecular subtype may be associated with progesterone response in patients with EC/AEH. CN-L tumors had the best response, and MSI-H tumors had the poorest. Recurrence after CR is common, and close surveillance is warranted. Larger studies investigating the role of molecular classification in medical management of EC/AEH are needed.

Patient-reported symptoms after minimally invasive hysterectomy and association with postoperative complications.

OBJECTIVE: To describe patient-reported postoperative symptoms and to evaluate the use of digital symptom tracking and alerts to detect postoperative complications. METHODS: We retrospectively reviewed patients who underwent a minimally invasive hysterectomy and enrolled in our Recovery Tracker program from 4/5/17-12/31/21. The Recovery Tracker is an at-home virtual tool used to track patient-reported postoperative symptoms for 10 days. Predefined thresholds for "red" and "yellow" alerts are based on symptom severity and timing. Data on patient demographics, surgery, and postoperative course were collected to evaluate the association of alerts with complications and compare outcomes of patients who did/did not enroll in the program. RESULTS: Of 2362 eligible patients, 1694 (71.7%) enrolled in the Recovery Tracker program. Pain was the most severe symptom, followed by fatigue. Eighty-seven patients experienced 102 complications (5.1% complication rate) and 32 experienced 39 grade ≥ 2 complications (1.9% severe complication rate). Excluding complications that occurred prior to Recovery Tracker use, 1673 patients experienced 28 grade ≥ 2 complications. Of 345 patients (20.6%) who triggered a red alert, 13 (3.8%) had a grade ≥ 2 complication. Of 1328 patients (79.4%) with no red alerts, 15 (1.13%) had a grade ≥ 2 complication. Relative risk of a grade ≥ 2 complication if a red alert was triggered was 3.25 (95% CI: 1.6-6.9, P = .002). Rate of severe complications was significantly higher among patients who did not use the tool (3.3% vs 1.9%; P = .04). CONCLUSIONS: The Recovery Tracker tool may assist in early identification of postoperative symptoms after minimally invasive hysterectomy.